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A Canadian man suffered a heart attack after he was stricken with ‘the fear’ 30 minutes after consuming a super-strength cannabis lollipop.

Shops in Canada sell ultra-powerful ‘edibles’ legally in the wake of legalisation in the country – and the man consumed most of a lolly with 90mg of THC (delta-9-tetrahydrocannabinol).

The dose of THC , the active ingredient in cannabis, he is thought to have absorbed was equivalent to smoking ten joints in one go.

Cannabis lollies can be very, very strong (Getty)

Dr Alexandra Saunders of Dalhousie University in Canada said that the patient ‘presented with crushing chest pain after consuming most of a marijuana lollipop. The whole lollipop contained 90 mg of THC, so an estimated 70 mg was consumed.

She said that, ‘inappropriate dosing and oral consumption of marijuana by an older patient with stable cardiovascular disease resulted in distress that caused a cardiac event and subsequent reduced cardiac function.’